Go from the shore to the rainforest on a morning or afternoon adventure from the port of juneau to a zipline park on douglas island a high speed boat ride zooms across the gastineau channel to douglas island where you hit the ground running with an off road drive through the rainforest to 10 ziplines the dense forest becomes your aerial playground as you soar above attractions like bullion creek and the old treadwell mine and end with a rappel descent from the final platform